| 菜农需要选择合适的蔬菜大棚覆盖材料 |
| 添加时间：2019/6/15 16:04:28 浏览次数： |
| 菜农应根据自己的生产需要选择合适的蔬菜大棚覆盖材料。 （1）普通膜。以聚乙烯或聚氯乙烯为原料，大棚膜厚0.1毫米，无色透明；使用寿命约为半年。 （2）多功能长寿膜。在聚乙烯吹塑过程中加入适量的防老化料和表面活性剂制作而成。宽幅7.5米、厚0.06毫米，使用寿命比普通膜长1倍，夜间棚温比其它材料高1-2℃；膜不易结水滴，覆盖效果好，成本低、效益高。 Vegetable farmers should choose suitable vegetable greenhouse covering materials according to their own production needs. (1) Common membrane. Using polyethylene or polyvinyl chloride as raw material, the film thickness of greenhouse is 0.1 mm, colorless and transparent, and its service life is about half a year. (2) Multifunctional longevity membrane. In the blowing process of polyethylene, a suitable amount of anti-aging material and surfactant are added to make it. It has a width of 7.5 meters and a thickness of 0.06 mm. Its service life is 1 times longer than that of ordinary film, and its shed temperature at night is 1-2 degrees higher than that of other materials. The film is not easy to form water droplets and has good covering effect, low cost and high benefit. |
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